Open back box with ground screw bump



FIG. 1 is a perspective view of an open back box assembly having a ground screw bump in accordance with our design;

FIG. 2 is a frontal view of the assembly of FIG. 1, in accordance with our design;

FIG. 3 is a side view of the assembly of FIG. 1, in accordance with our design;

FIG. 4 is an alternate side view of the assembly of FIG. 1, in accordance with our design;

FIG. 5 is a side cross-sectional view of the assembly of FIG. 1, taken along section 5-5, in accordance with our design;

FIG. 6 is a perspective view of another open back box assembly having a ground screw bump in accordance with our design;

FIG. 7 is a frontal view of the assembly of FIG. 6, in accordance with our design;

FIG. 8 is a side view of the assembly of FIG. 6, in accordance with our design;

FIG. 9 is an alternate side view of the assembly of FIG. 6, in accordance with our design; and,

FIG. 10 is a side cross-sectional view of the assembly of FIG. 6, taken along section 10-10, in accordance with our design.

The broken lines shown herein are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for an open back box having a ground screw bump, as shown and described. 